"Ready to go", in the sense that living things are equipped with a means of making small errors which are used by natural selection to make new structures.Barbarian, regarding mutations:There is a lot of that. Many mutations are recessive and a population over time accumulates a lot of genetic variation that can become useful if the environment changes. The founder population of lizards, for example, could have had at most, 20 alleles for any gene locus, since each lizard can only have 2. The new ones evolved by mutation. Sometimes, we can even observe that happening, or trace the mutation back to a known ancestor. Would you like to learn about it? .
Label: Sarcastic